Nail-picking machine for box-nailing machinery.



C. G; LUNDHOLM.

NAIL PIGKING MAGHNBFOB. BOX NAILING MACHINERY.

APPLICATION FILED APR. 7, 1913v Patented Aug. 25, 1914.

M@ @M5/f THE NoRRis PETERS' 00,. PHOTOYLITHU.. WASHINGTON, D. cA

C. G'. LUNDHOLM.

NAIL P IGKING MACHINE POR BOX NAILING MACHINERY.

APPLICATION FILED APR. 7, 1913*. 1 .108,594.. Patented Aug. 25, 1914.

2 SHEETS-SHEET 2.

fifi/myx THE NORRIS PETERS (7n PHOTO-LITHO.. WASHINGTON. D. C.

narran sraiwnnr ont-rien 'en /intese'. miit'iiiioniu,`- or san nnnniinnrne, carin-entita, assit-mon fro ,Toi-in J. nannonn, or san snit-Nannini@ cnnircnnin.

To all 1li/wmt may concern Be it known that l, CHARLES Gr. LUND- i-iomt, a citizen of the United States, and residing in the city of San Bernardino, in

the county of vSan Bernardino and State of` California, have invented a new and useful Improvement in Nail-Picking Machines for Box-Nailing Machinery, of which the following is a specification.

This invention relates to boX nailing inachines, and the principal object is to provide a boi; nailingA machine with an eliicient nail picker7 which automatically picks a nail and pushes the saine into a proper chute of a nail chuck. I j

lt is a further object to provide a nail picker with a gravity feed tothe picker,l and reciproeating,` meansto pick a nail from said gravity means and deliver the same to a nail y j times., Five pairs of these guide-bars are chuck chute.

ln the drawi-nes accom aan' in@` this s decis,

fication Figure 1 is a front elevation of a portion of a box nailing machine showing this invention appliedfthereto at thev upper portion of the machine. Fig. Qis a side ele-` vation of this invention, a sufficient portion of a box nail-ing Vmachine being shown to show the operative connection therewith. Fig. 3 is: an enlarged detail of one end of the picker mechanism. Fig. l is a detail, of the rsame character shown-ig the picker `reciprocated, `and the pusher about to push the nail into the adjacent chute. transverse section of Fig.` 3 on the line 5-5 `viewed in the direction indicated byV the arrews.k i l.

This invention is an improvement adapted to be. vaplilied to box nailingmachines, and particularly to. the box nailing machine illustrated and claimed in patent granted to E. E. Northrup, No. 817,509, April 10, 1906.

More specifically in the drawings, 10 and 11 designate the end ufprights of the frame of a box nailing machine, as shown in the patent above mentionech the movingl parts mounted thereon being operated from the main shaft 12, driven by any suitable means, one end of the shaft being provided with eccentric 14, on which bears the roller 15 revolubly mounted in the 'lever 16. rlhis lever is, preferablyv pivoted at the forward portion of the fra-me and connected by suitable pitman rods to the nail hopper 17 pivo-tally mounted abovethe top 18 of the machine. This hopper is pro- Fig. 5 is a l Specication of Letters Patent. lgttnntd 255 1914:, application fried april 7, isis.v semi nu. mensa y vided ign the usual manner with separating partit-ions 19 and the slots 20 in the floor thereof', the shaking movement imparted to the box by the eccentric le throwing the nails with their points downandresting with their headseX-t'ending over the sides of the slots. ;v

On the outer face of the eccentric 14: is a i cranlr pin 22 connected lby pitinan rod 23 to lthe nailing cross-head 24, which is reciprocatingly mounted adjacent the frontof the machine,y and preferably inclined slightly to thevertical plane.. Also mounted on tcp of the frame 1,8 and supported by means of bracketsQ, are a plurality vof guide-bars 26, Ia pair of these lguide-bars being supported in such position that their upper ends forin a continuation `of the sides of the slots 2O in the nail hcppei, and register therewith at all shown, which arepreferably formed of strip E metal7 having 'their lower and forwardly eX- tending ends cut away-to forni the points 28 which just clear the 'reciprocating picker 29.

Th-ese bars, as shown, arev preferably ini vclined at vanrangle of approximately 25o to the horizontal.

To the lower portions of these guidebars are secured the guiding; plates 80, so that a narrow channel is formed jof approximately the same depth as the jlength of the nails used', soqthat thelatter -are kept in `alinement- The guide-way formed, by these `guide-bars and plates, is of readily'v slide there-through.

vunder the vertical termination of the z uideplates, and provided with ya slot to embrace the plates, is the tubular chute 31, the slot being of sufficient depth to `permit the lnail 4.to-pass there-through in suspended position, f as clearly shown in Fig. 5, this position betangular in cross section in the portion in engagement with the blocks 33 and 34, the endV supported in the block 33 being preferably extended as a cylindrical stud outside the frame, provided with an annular ring ]ust suilicient Vwidth to permit the nail to f immediately 'the' picker bar.

lsecured theretoA ands-forming a stop for the coiled spring 36, which normally holds the picker barin position with the notches 37 onV its inner face registeringwith the guide-way formed by the guide-bars 26. Suitablecovering plates hold the bar 32 securely in position in the blocks.

Mountedupon the picker bar 29, is ya push bar/38,'this bar being preferably `a lat plate, of such width as to clear they fastening bolts of the picker bar 29, and of such length as to closely lit between the inner faces of thek blocks 33 and 34. lnclined slots 39 vare cut diagonally in this push bar,"which Vare adapted to engage rollers 40, mounted on` pins 41 projecting from the upper face of Adjoining these' slots 39, are parallel slots 42, which embrace studs 43, .which are provided with heads 44 adapted 'to overlapjthe sides of lthe slot and se cure the bar in. operative relationv to its ynation with a slotted nail hopper, and a plucompanion bar 29. v v

To reciprocate the bar 29 and its compan ion pusher bar 38, any suitable meansl may be used, that shown consisting` of a pivoted. leverf46 pivoted in bracket 47 secured to the frame 11, the lower end being provided with an inclined cam face 4S, which engages with a roller 49, adj ustably mounted on the crosshead 24. The upper end of thel'lever 46 projects into a vertically disposed -slot 50 cutfin the bar 32, so that the upward movement of the cross-head throws the bar 32, against the tension ofthe spring 36 with a quick motion, and carriestherewith in the notch 37 inthe picker bar, a nail from apoint oppo-vv site the terminal end of theguide-bars rand their guideway. As the guide-bar 32 is re-v ciprocated in the direction indicated by thev l clearly shown in Fig. 4, and drops into the open mouth of the chute 31, which as shown,

is placed slightly eccentric to the median normally kept in the guide-waysl by the op* eration oi. the hopper 17, drops into the ad,

jacent notch 37, and is ready for a repetition operatively.

of thereciprocation of the picker bar and its companion push bar.

It will thu'sbeseen by the use of thisl vention, anail is' positively delivered toeaeh l chute communicatingwith eachnail chuck, at each stroke ofthe hammer, the tubular chute being of' such diameter that theJ nail is retained in its proper vertical position in n.

its vtravelto the nail chuck;

What I claim is: -v

1. In a box nailing machine," the combina` versely from said guide-ways, and sliding means to remove the 'nails from the said picker to deliver chutes. n

2. In a box nailing the l same to` the nail machine, the combirality `of nail chutes, of a plurality 'of guidebars forming a plurality of nail guide-ways registering with the slots in said nail hop-k per, the lower ends of Isaid bars beingfcut away and terminating adjacent and verti-` cally disposed over said nail chutes, a reciprocating pickery bar mounted transversely and adjacent the terminations ofsaid guidebars, a push bar arranged to slide across said picker bar, and means to reciprocate saidl picker bar and slide said Y push bar cofl 3. In a box nailing machine, the combina# tion with a nail hopper, and a plurahtyo'l -nailchutes leading tonail chucks, the said chutes 'having slotted upper ends, of a plurality of inclined guide-ways, their upper ends terminating adjacent said hopper and,

their lower ends provided withl guide plates terminating within the slotted upper ends of said chutes, a picker bar provided withL notches registering with and vadjacent the pins on said picker bar, a lpush bar mounted slots to engage said pins, and 'means to actuate said bars cooperatively, whereby nails name this28th lower ends of-said nail guide-ways,v gui-de' I f Vupon said picker bar and having inclinedl Copies o.'k this patent may be obtained for lve'eents each, by addressing the Commissioner kof'latents, Washington, 13.6. f n v 

